package com.jay.base.thread;

import java.util.concurrent.*;

/**
 * Created by caoyuan7 on 2019/8/13.
 */
public class TestA {
    public static void main(String args[]){
        ExecutorService executor = Executors.newCachedThreadPool();
        Task task = new Task();
        Future<Integer> result = executor.submit(task);
        executor.shutdown();
        try {
            Thread.sleep(1000);
        }catch (InterruptedException e1){
            e1.printStackTrace();
        }
        System.out.println("主线程在执行任务");
        try {
            System.out.println("task运行结果"+result.get());
        } catch (InterruptedException e) {
            e.printStackTrace();
        } catch (ExecutionException e) {
            e.printStackTrace();
        }
        System.out.println("所有任务执行完毕");
    }
}
class Task implements Callable<Integer>{

    @Override
    public Integer call() throws Exception {
        System.out.println("子线程在进行计算");
        Thread.sleep(3000);
        int sum = 0;
        for (int i=0;i<100;i++){
            sum+=i;
        }
        return sum;
    }
}